Junior high school mathematics test paper proposition
Proposition is the knowledge in the fourth chapter of the eighth grade of Zhejiang Education Press. The sentence that makes a correct or incorrect judgment on something is called proposition. General interrogative sentences and imperative sentences are not propositions. The second sentence above is a question, and the fifth sentence is to tell others to do something, which tastes like an imperative sentence, so (2) and (5) are not propositions. The rest are propositions.